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    Nutritional influences on growth and onset of puberty in Boran and Boran X Friesian bulls in Ethiopia

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    Authors
    Tegegne, Azage
    Entwistle, K.W.
    Mukasa-Mugerwa, E.
    Date
    1992
    Language
    en
    Type
    Journal Article
    Accessibility
    Limited Access
    Metadata
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    Citation
    Theriogenology;37(5): 1005-1016
    Permanent link to cite or share this item: http://hdl.handle.net/10568/29651
    DOI: https://dx.doi.org/10.1016/0093-691X(92)90099-D
    Abstract/Description
    Outlines results of a study carried out in Ethiopia, to determine the effect of dry season supplementation on bull's growth and fertility, hence 27 Boran and 37 Boran X Friesian crossbred bulls were weaned at 6 months of age and were randomly assigned to either a dry season supplementary feed containing 16 percent crude protein or control groups. Data were collected on body weight, wither height and scrotal circumference at monthly intervals. The bulls received gonadotropin releasing hormone at 2-month intervals, and plasma testosterone responses were determined; semen was collected at monthly intervals by electroejaculation.
    AGROVOC Keywords
    ETHIOPIA; BULLS; BOS INDICUS; GROWTH; SEXUAL MATURITY; SEMEN; BORAN CATTLE; FRIESIAN CATTLE; SUPPLEMENTARY FEEDING; GONADOTROPIN
    Subjects
    ANIMAL FEEDING; FEEDS; LIVESTOCK;
    Countries
    ETHIOPIA
    Regions
    AFRICA; EAST AFRICA
    Livestock breed types
    ETHIOPIAN BORAN
    Collections
    • ILRI articles in journals [4825]
    • ILRI archive [4979]
    • DAGRIS [855]

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